In the film Invasion of the Body Snatchers aliens invade earth by replicating individuals. While the idea that we could be duped by shape-shifting aliens is a great idea for a film, the story echoes a biz ...

(Medical Xpress)—New research from the University of Adelaide has delved into the reasons why some people are unable to break free of their delusions, despite overwhelming evidence explaining the delusion isn't real.

Scientists at the University of Cambridge have developed a tool capable of predicting the number of individuals expected to develop a first episode of psychotic disorder -disorders characterised by altered ...

Antipsychotic drugs, used in the treatment of psychotic disorders involving severe delusions and hallucinations, have been studied for more than 70 years. Currently available antipsychotic drugs, however, only alleviate certain ...

Crafting public health messages about a disease may create stigmas that influence how likely people are to endorse certain interventions, such as isolating infected persons, forcing treatment on them and mapping their location, ...

Dementia -- an acute loss of cognitive ability -- can be marked by memory loss, decreased attention span, and disorientation. It occurs in severe disorders such as Alzheimer's disease. Despite the fact that the condition ...

A pioneering new study finds that a specific type of computerized cognitive training can lead to significant neural and behavioral improvements in individuals with schizophrenia. The research, published by Cell Press in the ...

In a new study from the Centre for Addiction and Mental Health (CAMH), people with schizophrenia showed greater brain activity during tests that induce a brief, mild form of delusional thinking. This effect wasn't seen in ...

Understanding the actions of other people can be difficult for those with schizophrenia. Vanderbilt University researchers have discovered that impairments in a brain area involved in perception of social stimuli may be partly ...

(Medical Xpress) -- Scientists at the University of Glasgow have identified a potential target for the treatment of schizophrenia.

May 11, 2011

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Delusion

A delusion is a false belief held with absolute conviction despite superior evidence. Unlike hallucinations, delusions are always pathological (the result of an illness or illness process). As a pathology, it is distinct from a belief based on false or incomplete information, dogma, poor memory, illusion, or other effects of perception.

Delusions typically occur in the context of neurological or mental illness, although they are not tied to any particular disease and have been found to occur in the context of many pathological states (both physical and mental). However, they are of particular diagnostic importance in psychotic disorders including schizophrenia, paraphrenia, manic episodes of bipolar disorder, and psychotic depression.